The doors can be programmed to autolock at 5 mi per hour. The bad news: you then have to either double click (ie try to open twice) the door you want to open from inside, or have to push the door open button in center console to open all of the doors. This system works great for kids in the back seat and spouse in driver's seat. Does not work well if you have adult passangers in the backseat and you forget to unlock master lack.